Once I have determined the desired dry film thickness (dft) for my project, how do I ensure the finished project has sufficient mil coverage?
The most accurate way to measure dry film thickness is to use a mil gauge. It is critical that at least two coats of Rust Bullet be applied to achieve a dft of 6 mils. One coat of Rust Bullet Standard Formula (Gold Label) produces an approximate dry film thickness (dft) of 3 mils (0.003 inches or 0.076 millimeters). The first coat of Rust Bullet soaks through the rust down to the metal below, encapsulates the rust, and dehydrates it. The first coat must be applied generously enough over the rust for this process to take place. As the first coat dries and gases off, tiny pin holes form in the coating. The second coat will fill any pin holes and seal the surface. Apply additional coats to achieve the desired dft for the appropriate protection for the project. One gallon of Rust Bullet covers approximately 400 sq. ft. with a single coat for a dft of 3 mils, i.e. if the dry film thickness for a project is determined to be 12 mils; one gallon will cover approximately 100 sq. ft. The number
